There is not a specific technical proposal to be able to achieve a clear presentation of the complex mixing process between the primary and entrained flows within the steam ejector. In this study, a novel ejector model with species transport is proposed that can clearly elucidate how, when, where and to what extent the two streams mix. Systematic quantitative analysis toward the mixing of two streams is performed from the perspectives of mass, momentum and energy transfer. Further, the similarities and differences of the mixing process among three analytical perspectives are clarified. Key results revealed that the mixing mainly occurs at the nearby of the local mixing layer, and there are still some distances from the homogenous mixing state after the mixing chamber process, only up to 80.6% the mixing uniformity φ obtains. Additionally, the mixing layer follows a similar growth trajectory, and φ increases as mixing continues regardless of an analytical perspective. However, a much faster mixing is observed from the mass transfer perspective. Specifically, φ_M (80.6%) is significantly larger than φ_V (60.7%) and φ_E (59.6%) at the mixing chamber outlet. It can be concluded that the essential mass mixing laws of the two streams are not necessarily achieving a complete replication whether from the perspective of momentum or energy transfer. These key finds provide a more in-depth and comprehensive understanding of the mixing process inside the ejector.

没有能够使蒸汽喷射器内的主要气流与气流夹带之间的复杂混合过程清晰呈现的具体技术建议。在这项研究中，提出了一种具有物种迁移的新型喷射器模型，该模型可以清楚地说明两种流如何，何时，何地以及在何种程度上混合。从质量，动量和能量转移的角度对两种流的混合进行了系统的定量分析。此外，阐明了三种分析视角之间混合过程的异同。关键结果表明，混合主要发生在局部混合层附近，混合室经过均匀混合状态仍存在一定距离，混合均匀度φ最高可达80.6％。获得。此外，混合层遵循相似的生长轨迹，并且无论分析的角度如何，随着混合的继续，φ都会增加。但是，从传质的角度来看，混合快得多。具体而言，φ_中号（80.6％）比显著较大φ _V（60.7％）和φ _Ë在混合室出口（59.6％）。可以得出结论，无论是从动量还是从能量转移的角度来看，两种流的基本质量混合定律并不一定实现完全的复制。这些关键发现为喷射器内部的混合过程提供了更深入，更全面的了解。